Rotary engine.



W. C. F. BRUEGGEMANN.

ROTARY ENGINE.

APPLICATION FILED JUNE 3.1915.

' Patented Ded. 11,1917.

INVENTOH 011M11 @m W. C. F. BRUEGGEMANN.

ROTARY ENGINE. APPLICATION FILED JUNE 3. 1915.

i 249 896. P1111161 Dec. 11,1911: Y 3 SHEETS-SHEET 2. 1 2 .10. 15

w/r/vsss.- INVENTOR A TTOR/VE Y W. C. F. BRUEGGEMANN. ROTARY Enema I APPLICATION FILED JUNE 3. I915. 1,249,896. Pam-med m. u, my.

3 SHEETS-SHEET 3.

FWL

WITNESSES: I 6) Ifl/VEfl/TOR f g fiima $757M Arrmm WILLIAM E, BRUEGGEMANN, till it'll. LOUIS, llCEIfdEJUUItL lEtUTj-ilEtY ENGINE.

To all whom z't may concern:

Be it known that I, l VILLIAM C. F. BRUEGGEMANN, a citizen of the United cltates, residing at 4816 ll. th street, in the city of Louis anc Eltate of lt lissouri, have invented certain new and useful improvements in ltotary Engines, of which the following, taken in connection. with the accompanying drawings is a specification.

This invention relates to improvements in rotary engines of the kind in which the actuating fluid is admitted in a continuous manner into the working chamber thereof to do work and the objects of my improvements are; first, to construct engines of this lrind which are adapted to be operated by actuating fluid which flows through an expanding nozzle or passage from which said fluid enters the working; chamber of the en gine in a continuous manner to do work; and to operate the engines so that normally the actuating fluid does work in the working chamber thereof at a lower pres sure than the initial pressure of said fluid,

' so that normally the actuating fluid is can pended in said expanding; nozzle or passage from an initial to a lower working pressure; second, to construct engines of this kind to be reversible and adapted to be operated, shut down, or reversed in a simple manner by means whereby the flow of the actuating fluid into the working chamlmr thereof niay be controlled; ti d to obtain a perfectly balanced engine which has no dead point and is of a simple and durable construction, the parts of which are adjustable for wear, and may as effectively lubricated, these and other objects are accomplished by the engine hereinafter described.

'llhe invention consists in certain features of construction hereinafter described and pointed out in the claims.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

lln the drawings which illustrate this in vention Figure 1 is an elevation showing the inlet side of an engine embodying; my improvements; Fig. 2 is an elevation of the engine at rightangles to Fig. 1, in which the inlet side is shown to the right of the figure; Fig, 3 is a side elevation. of a thin plate; Figs. 4 to 6 inclusive are illustrative sections through oscillatory pistons, (to be Specification of Letters Patent. lll g itnyy'tnufll lljngn 11 1917 Application filed June 3, 1915.

Serial No. 31,991.

referred to later) in which a dotted outline indicates the position of a crank thereon; 'l' is a sectional elevation of the engine at right angles to Figs. and 8 as seen from the inlet side thereof in which the section through a revolving; cylinder on line ClD, and through a cam-ring on line El oi. Fig. 2; llig. is a longitudinal section through the engine at right angles to Fig. 1 on line .dth lhl thereof, in which the inlet side is shown to the right of the fi 'ure; Fig. 9 is a side elevation of the hollow stationary shaft or cylinder of the en gine; Figs. 10 and 11 are part sections through said hollow stationary shaft or cylinder to be referred to later; Figs. 12, 13 and ll: show respectively an inside elevation edge view, and section (on line tl-ll of 152) of the half cylinder shown in 7; 15 and 16 show respectively a plan and side elevation of bearing sleeves;

Figs. 17, 18 and 19 show respectively a plan,

elevation, and section (on line tl'll of Fig". 17) of oscillatory pistons; S30 is a top view of a cranlr shown mounted on an oscillatory piston; l 21 and are elevations of a valve, a cross section of which is shown in Fig. 7; 24.- and are part sections which illustr to a modified construction of the hollow stationary shaft and valve shown in previous tlrrm'es; Fins. E26 and are elevations of the modified valve in this construction.

Referring to the drawings, as shown. in li ies. l, 2 and il a hollow stationary shaft or cylinder 1 having an inlet and an exhaust head 3 secured to the ends thereof is supported by upright stands l and forms therewith the frame of the engine resting" on a bedplate 5 the heads 52 and 3 being mounted adjustably on seats 6 which are formed on stands etc.

it. revolving cylinder 7 provided with the oscillatory division members or pistons 8 and 9 is mounted on the hollow stationary shaft 1, and rotates on tapered bearing sleeves 10 provided on said shaft 1. lievolvinp; cylinder '2' constructq-zd in halves which are adapted to be held concentric when bolted together, as shown in Fig. 8. The walls of the half cylinders form circular cavities l1 and 12, and the diametrically opposite radial piston seats 13, atthe outer end of which the flange 14, is providcch as shown in Figs. 12, l3 and l-fl.

{lentrally locatech on the outside of the lit) hollow stationary shaft 1, a projecting collar 15 is formed (see Figs. 7, 8 and 9) the periphery of which is shaped as the central section of a sphere, the width thereof being equal to the diameter of the pistons 8 and 9. A. vane or abutment 16 projects from collar 15 the radial edges of which (Fig. 7) are approximately sixty degrees apart.

In Figs. 7 and 8 sections through revolving cylinder 7 mounted on hollow stationary shaft 1 are shown; as will be seen the projecting collar 15 is partly included in and fitted closely to the walls of cavities 12, the vane or abutment 16 projects vertically downward from collar 15 into cavities 11, and is fitted closely between the walls thereof, where so included, the walls of cavities 11, the radial edges of vane or abutment 16, and the exposed portion of the periphery of collar 15 form the annular working chamber 11 of the engine.

The construction of the identical oscillatory division members or pistons 8 and 9 is shown in Figs. 17, 18 and 19; as will be seen a central slot 17 is formed between diametrically opposite piston wings 18 which are connected at one end, from which a round stem 19 extends having a square seat 20 at the end thereof. In Fig. 7 the pistons 8 and 9 are shown mounted in the diametrically opposite piston seats 13, the axis thereof being located in the central plane of revolving cylinder 7 and of collar 15. These pistons have a diameter approximately three times the width of working chamber 11. The inner end 21 of the piston wings 18 is concaved to fit the spherical periphery of collar 15 so as to be adapted to be fluid tight contact therewith in any position of pistons 8 and 9 in seats 13. The pistons are provided with identical cranks 22 which are mounted on seats 20 and held at an angle of thirty degrees with slot 17 (Fig. 20), being secured to stem 19 by the set-screws 28. Rollers 241 are mounted on the cranks 22 and held thereon by the collared pins 25. The rollers 2st are adapted to project into and travel in a campath 26, which is formed between the inwardly projecting flanges 27 of the camring 28, and is held concentric with revolving cylinder 7 by stands 29 on the lower half which are secured to bed-plate 5. As pistons 8 and 9 rotate in either direction with revolving cylinder 7 the flanges 27 of cam-ring 28 (through rollers 2st and cranks 22) control the position of slot 17 in relation to working chamber 11 in the following manner. As shown in Figs. 1, 2, 7 and 8. in the lower half of cam-rin 28 between points 3031, the cam-path 26 is offset from the central plane of revolving cylinder 7 toward the inlet side of the engine, and as rollers 24: travel between said points 3031 the slot 17 of piston 8 or 9 is held in alinenient with working chamber 11 in this posltion piston wings 18 form a eont'inuat1on of the walls of working chainher it as pistons 8 or 9 pass vane. or abutment ill,

as is illustrated in Fig. (3, in which a cross which is equal to the distance of the axis of rollers 24- from the axis of pistons or ti; consequently, as rollers 21 travel between points 3233 in the upper ofiset cant-path 26, the slot 17 of the piston 8 or S) will be held at an angle of sixty degrees with working chamber 11 during a half revolution of revolving cylinder 7. In this position (Figs. 4 and 5) the piston wings 18 will be seated across working clnnnber 11, and will be adapted to form tluid tight walls in :eats 13 which divide working chamber 11 into compartments, whereby piston wings 18 are adapted to act as piston abutinents to propel revolving cylinder 7 in either direction. Figs. 4; and 5 are cross-sections through piston seats 13 and pistons 8 and 9 respectively on lines Gl*l and l fll o f Fig. l; the section are shown as they would be seen when viewed from a. position facing Fig. 2. Between points 32 and, 31 33, in the lower half of ca1nring 28, the cain-path 2G is inclined (to said plane) and joins the oilsct parts thereof with short curves. so that as rollers 2% travel through an inclined part of cam-path 26 the piston 8 or S) will he oscillated through an angle of sixty degrees in seats 18. I prefer to oscillate the pistons this angle as best suited to the smooth running of rollers 24: in cant-path flt. llevolving cylinder 7 through hollow shaft 1 and heads 2 and 3 is adjustable in relation to cam-ring 28 by means of the set screws 34:, which will be understood by reference to Figs. 1, 2 and 8.

Circular flanged retaining sleeves lii are fitted into the outer end of piston seats I11 and are secured to flanges H. as shown in Figs. 1, 2, 7 and 8. The inner sleeves Ilt' are rotatably connected with sleeves 35 hv means of the threaded shoulders 37; the stem 19 of pistons 8 and 9 extends through a central hole formed in sleeves 8t) and [its loosely therein; a thin washer (not shown) is placed between sleeves 36 and the shoulders of pistons 8 and 9. As will be seen sleeves 36 may be rotated by means of notches 38 so as to travel toward or away from piston 8 or i whereby the concave-d end 2! of pidon wine's 18 may be held in contact with the sjilitlb cal periphery of collar as closely as delliii' Elli sired, and wear taken up. The flanged glands 39 project into cavity between sleeves 35 and 36 and are adapted to co1npress packing against the threaded shoulders 37, which prevents leakage and also tends to lock sleeves 36. The glands 39 are secured to flanges 14 by two bolts il-1 which also pass through the flange of sleeves The tapered bearing sleeves 10 are mounted on hollow shaft 1 with a sliding fit and extend into the tapered bore of hubs 42 of revolving cylinder 7. Sleeves 10 are provided with lugs 4L3 through which the setscrews at are threaded so that the ends thereof project into a shallow recess 45 and are also adapted to press therein against the lugs 46 (Figs. 1 and 2) which are formed on the heads 2 and 3; by these means sleeves 16 may be held fluid tight in hubs 4-2 and adjusted for wear. The diameter of hollow shaft 1 is slightly increased at each side of collar 15, to form. the short inclines 4 which are of such dimensions that setscrews l lmay force the thin end of sleeves 10 over said inclines 4:7 to produce a lluid tight lit thereon between sleeves 10 and hollow shaft 1. Setscrews d8 assist in securing sleeves 10.

The bearing sleeves 10, working chamber 11, and piston seats 13 may be lubricated by oil under pressure from the oil duct 49 (Fig. 6) which extends through the lower part of inlet head 2 into hollow Slltllll; 1 and has two downwardly extending branches with open ings in the sides of collar 15.

The bore of hollow shaft 1 is divided into an inlet 56 and an exhaust chamber 51 by the tapered or cone shaped valve which is seated rotatably and fluid tight in the pro jecting valve seat 53, termed centrally in said bore (Fig. 6) the smaller end of valve facing inlet chamber 50. An inlet and exhaust pipe may be supported on and secured to the respective heads 2 and 3 to communicate with the respective chambers 50 and 51 through openings formed in said heads 2 and 3.

The tapered valve 52 is secured on the round valve rod 56 which extends through a stutling box 57 formed on inlet head 2 which is made fluid tight in the usual manner by the gland 58. ll. lever 59 is loosely mounted on valve rod 56 the hub of which is held in contact with the gland 58 by the nut 60 threaded on the valve rod 56. A setscrew 61 threaded through the hub of lever 59 is adapted to extend into and be in contact with the sides only of a short slot 62 6) formed in valve rod 56; in this manner means are provided to rotate and adjust valve 52 in valve seat 53. The circular cover 63 is removable from exhaust head 3, allowing the removal of valve 52 when necessary.

[to expanding inlet port 64- (Fig. 21) is termed lengthwise in the periphery of tapered valve 52. This port or, in conjunction with the tapered valve seat 53, is adapted to form a passage or nozzle having a gradually increasing ci'osssectioii, beginning at thsmall. rounded throat 65 thereof which in connnunication with inlet chamber 50 (Figs. 8 and 16). its will be seen this passsage or nozzle 61-, is similar to and is adapted to expand the actuating fluid therein, as in the expanding nozzle of a turbine, from an initial to a lower pressure. ports 66 and 67 are formed through collar 15 at each radial edge of vane or abutment 16. The large end of expanding inlet port 6 L is adapted to register with ports 66 and 67, and. when in register with either port 66 or 67 an inlet passage formed through whichthe actuating fluid may flow from in let chamber 50 into working chamber 11, as illustrated in Fig. 10; this section is at right angles to and on line lblN of Fig. 7 and is shown as viewed from letter U, showing port 64lin. register with port 66.

Two identical exhaust ports 68 and 69 (Fig. 22) formed in the periphery of valve 52 are also adapted to register with ports 66 and 67 to form therewith identical exhaust passages from working chamber 11 into exhaust chamber 51. Said ports 66 and 69 are spaced. on either side of expanding inlet port 64: (Fig. 7) so that when port 64: is in register with port 66 the exhaust port 69 will be in register with port 67; when port 6 .1 is in register with port 67 then exhaust port 66 will be in register with port 66. An exhaust passage is illustrated in Fig. 11, this section is at right angles to and on line U-F ol. Fig. 7 and is shown as viewed from the letter M, showing exhaust port 69 in register with port 67. The crosssectional contour oi ports 64l, 66, and 69 is shown semi-circular but may be otherwise. The expanding inlet port 64l could also be constructed as a round nozzle entirely within the body of tapered valve 52 but would necessitate an increased diameter of hollow shaft 1; I therefore prefer the construction shown. 1

The part sections Figs. 23, 24, and 25 illus trate a modified construction of hollow shaft 1 in which valve seat 53 is adapted to seat a longer tapered valve 52 and 27) having a longer expanding inlet port 6 1. its will be understood the dimensions of said port 64- are determined by the normal conditions of pressure load and so forth for which the engines are designed. When necessary the ports 66 and 67 may be enlarged as shown in Fig. 23; likewise the exhaust ports 66 and 69 (Fig. 27). The Figs. 9A and 25 are part sections at rightangles to and on lines ll-l7' and llf-X re spectively of Fig. 23, showing an inlet and exhaust passage respectively in this con.- struction.

The operation of the engine is as follows;

Circular I in the position shown in Fig. 7 it will be seen that piston Wings 18 are seated across working chamber 11, the inlet passage is formed by port 6 1 in register with port 66, the exhaust passage by port 69 in register with port 67; consequently, steam. unc pressure as the actuating fluid having entered inlet chamber 50 from inlet pipe 54, will flow through the inlet passage (ports 64 and 67) into working chamber 11 between vane or abutment 16 and piston 8. The pressure of the steam on piston 8 propels this piston toward the exhaust passage (ports 69 and 67) and rotates revolving cylinder 7 in the direction indicated by the arrows, the contents of working chamber 11 on the advancing side of piston 8 escaping through the exhaust passage into exhaust chamber 51. Piston 8 propels revolving cylinder 7 (a half revolution) until arrived at the position before held by piston 9, the roller 2% thereof having traveled in the upper oifset cam-path 26 from point 32 to In the meantime, piston 9 while approaching vane or abutment 16 is oscillated through an angle of sixty degrees as the roller 2 1 there of travels from point 33 through this inclined part of cam-path 26 to point 31, whereby slot 17 is brought into alinement with working chamber 11 continuing in this position piston 9 passes vane or abutment 16, as roller 2% travels from point 31 through the lower offset cam-patl 26 to point 30: having passed vane or abutment 16 piston 9 is again oscillated through an angle of sixty degrees, as roller 24 travels from point 30 through this inclined part of cam path 26 to point 32, arrived at which, the piston 9 will occupy the position before held by piston. 8 and with piston wings 18 again seated across working chamber 11. Piston 9 is now acted on by the steam and propels revolving cylinder 7 a half revolution during which the roller 2st thereof travels from point 32 to point 33, and the steam which propelled piston 8 is exhausted into exhaust chamber 51. While piston 9 propels revolving cylinder 7 the piston 8 is oscillated as ias been described for piston 9, and as the pistons arrive at the original position a complete revolution of revolving cylinder 7 has taken place.

In order to rotate revolving cylinder 7 in a direction opposite to that indicated by the arrows of Fig. 7, the valve 52 is rotated by means of lever 59 so that port 64rwill be in register with port 67, in which case exhaust port 68 will be in register with port 66.

In order to operate the engine with actuating fluid at a low pressure in working chamber 11 the exhaust ports 68 and 69 and ports 66 and 67 should have the largest possible cross-section, to reduce back pressure in working chamber 11. In an ideal engine the cross-section of the exhaust port would be equal to the cross-section of the working chamber; then the actuating l'luid could be employed in the working chamber at a pressure slightly above that of the atmosphere or of a condenser into which the engine exhausts.

By expanding the actuating lluid in the expanding passage or nozzle 64]; from an initial to a lower pressure, said iluid is enabled to flow at great speed into working chamber 11, to maintain a constant low pressure on pistons 8 or 9 when the load allows revolving cylinder 7 to rotate at high speed. In this manner considerable power may be developed in a small unit, and at the low pressure fluid tightness is easily had.

The drawings show a convenient construction whereby power may be transmitted from revolving cylinder 7 to a shaft 70 by means of pulleys 71 and belt 72; [his '-r.istruction. and a thin plate 73 3) which is adapted to be secured to the sides of re volving cylinder 7 (to confine a. heat insulating medium) form no part of my present invention.

[is will be understood the engine may be operated singly or in a series in cmijunctimi with a condenser or otherwise. \Vilh suit able alterations of the ports of valve 552 the engine may be adapted to operate as a pump.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a rotary engine; in combinathm a bed-plate provided with a cam-ring, and upright stands; a ported, hollow. stationary, shaft or cylinder; a tapered, ported. valve, therein; rem vable inlet and exhaust heads, secured to said hollow shaft or cylinder, and supported on the upright stands; a revolving cylinder, mounted on said hollow shaft or cylinder on bearing sleeves, and having a collar, and vane or abutment. on said hollow shaft or cylinder, inclosed therein diamel rically opposite, radial, oscillating pistons, mounted in the revolving cylinder. with retaining sleeves; cranks, having rollers, and mounted on the pistons; the rollers, adapted to be controlled by the cam-ring; the camring, adapted to control the movement and oscillations of the pistons; and adjusting, and securing means, for the different parts: substantially as herein shown and ('lescrihed 2. In a rotary engine of the class described, a ported hollow statimiary shaft; whereon, a revolving cylinder formed in two parts bolted together, and provided with radial oscillatory slotted pistons, is adapted, to rotate on tapered bearing sleeves provided thereon; the said hollow ported shafthaving, an inlet and an exhaust head secured thereto; a tapered ported 'alve seated in a projecting centrally located tapered valve-seat formed therein; a project-ing collar formed thereon till liti

intense having a spherical periphery, from which centrally between the edges thereofa vane or abutment projects, which is adapted, to fit closely to spaced apart walls of the said revolving cylinder, which spaced apart walls, form circular cavities wherein the said projecting collar and vane or abutment is included when the said revolving cylinder is mounted to rotate on tapered bearing sleeves provided on the said ported hollow shaft, and whereby when so mounted, an annular working chamber is formed in the said revolving cylinder into which the said vane or abutment projects; short inclines formed thereon next each side of the said projecting collar; ports, formed at each 'adial edge of the said vane or abutment through the said projecting collar and tapered valve-seat, and adapted to be in communication with the said annular working chamber and the ports formed in the said tapered valve; and an oil duct formed therein; substantially as herein shown and described.

3. in a rotary engine of the class de scribed, the combination comprising, the re volving cylinder formed in two parts, which is provided with the diametrically opposite radial oscillatory slotted pistons, and is mounted on the ported hollow shaft to rotate on tapered bearing sleeves provided thereon, and wherein the projecting collar, provided with a spherical periphery, and the vane or abutment formed on said shaft, are included; an inlet and an exhaust head secured to the said ported hollow shaft, and the said heads mounted on the flanged seats provided on the upright stands, which stands are secured on the bed-plate which is also provided with a cam-ring wherein a campath is formed, and which cam-ring is held concentric with the said revolving cylinder, the said oscillatory slotted pistons being pro vided with cranks whereon rollers are mounted; the said rollers projecting into the said cam-path and being adapted to travel therein; the said cam-path adapted to control the oscillations of the said oscillatory pistons, so that same may pass the said vane or abutment when the said oscillatory pistons travel below a horizontal plane, which passes through the axis of the said ported hollow shaft, and so that said oscillatory pistons form fluid tight abutment walls within the working chamber of the said revolving cylinder when same travel above the said horizontal plane; the said inlet and exhaust heads adapted to support a pipe thereon which may communicate with the bore of the said ported shaft through a passage formed in the said heads; a studing-boi: formed on the said inlet head; a removable cover provided on the exhaust head; and means whereby the said heads may besecured and adjusted side and endwise on the flanged seats provided on the said upright stands; substantially as herein shown and described.

at. In a rotary engine; the tapered valve, provided with a central hole, and having an expanding inlet and two exhaust ports formed in the tapered periphery thereof, these ports adapted to form part of the passage for the actuating fluid from the inlet into the exhaust end of the ported, hollow, stationary, shaft, or cylinder, the inlet port in conjunction with the valve-seat forming an expanding passage, in which the actuating fluid is expanded, substantially as herein shown and described and for the purpose specified,

5. lln a rotary engine; the combination with the ported, hollow, stationary, shaft or cylinder, provided with the removable inlet and exhaust heads, and having the collar, and vane or abutment, on the outside there of, and the tapered valve-seat on the inside, and ports at each radial edge of the vane or abutment, through the collar, shaft, and valve-seat, of the tapered valve, (having an expanding inlet port and two exhaust ports) seated in the valve-seat, the round rod mounted in the valve extending through a stufling box bearing, the stalling box, formed on the inlet head, the lever mounted 011 said rod in contact with the gland of the stul'ling box, means, adapted to hold the valve'fluid tight in its seat, and means securing the lever to the rod, and adapted to rotate the rod and the valve, whereby the inlet or an ex haust port may be stationed at either port through the collar, shaft, and valve-seat, the exhaust head provided with an opening through which the valve is adapted to pass, said opening closed fluid tight by a cover, and means, securing the cover to said head, substantially as herein shown and described and for the purpose specified.

6. In a rotary engine of the class described, a revolving cylinder which is pro vided with diametrically opposite, radial, oscillatory, slotted pistons, and is adapted to be mounted on a ported hollow shaft, to rotate on tapered bearing sleeves provided thereon; the said revolving cylinder being formed in two parts which are provided with hubs having a tapered bore; outer flanges formed thereon through which said parts are bolted together; spaced apart walls which form circular cavities identical in each. part, and which spaced apart walls, are adapted, to fit closely to a projecting collar having a spherical periphery and a vane or abutment projecting therefrom, which are formed on the said ported hollow shaft, and which are included in the said circular cavities when the said revolving cylinder is mounted on the said hollow ported shaft, to rotate on tapered bearing sleeves provided thereon, and whereby when so mounted, an annular working chamber is formed in the said revolving cylinder into which the said vane or abutment projects, the said annular working chamber being then in communication with the bore of the said hollow shaft, by means of ports formed therein at each radial edge of the said vane or abutment; diametrically opposite enlargements of the said spaced apart walls, forming piston seats wherein the said oscillatory pistons are mounted, the axis of the said seats being located on a radial line'in the central perpendicular plane of the revolving cylinder; flanges formed at the outer end of the piston seats, and through which, flanged retaining sleeves, adapted to retain the oscillatory pistons in said seats, are secured to the said revolving cylinder; substantially as herein shown and described.

7 In a rotary engine; the combination vith the ported, hollow, stationary, shaft or cylinder, with the revolving cylinder mounted on said hollow shaft or cylinder, and having the collar provided with a spherical periphery, and vane or abutment thereof included therein, the spherical periphery of the collar forming the inner wall of an annular chamber, into which the vane or abutment projects and. which with the radial edges of the vane or abutment forms the stationary boundaries of said chamber, substantially as herein shown and described.

8. In a rotary engine; the combination with the oscillating pistons, having diametrically opposite wings connected together, a. central slot between the wings, and the end of the wings concaved, and having a round stem provided with a square seat, of the cranks, provided wit-h a roller, mounted on the square seat of said stem in an angular position withsaidslot, the angle being half the throw or oscillation of the piston, substantially as herein shown and described.

9. In a rotary engine; the combination with the revolving cylinder, and the collar and vane or abutment, of the ported, stationary, hollow, shaft or cylinder included therein, of the oscillating pistons, provided with the cranks and rollers, and having diametrically opposite wings connected together and provided with concaved ends, with a central slot between the wings, mounted in the radial seats of the revolving cylinder, and adapted to rotate therein, with the concaved ends of the wings in continuous contact with the spherical periphery of the collar, the aXis of oscillation being in the central perpendicular plane of the collar, and the diameter of the pistons being equal to the width of the collar, substantially as herein shown and described.

10. In a rotary engine provided with a revolving cylinder having radial oscillatory pistons; the retaining sleeves, connected by threaded shoulders, and gland adapted to project between the walls thereof, the

1 ,eaasee outer sleeve and gland \aving a flange, adapted to be secured to the revolving cylinder, the inner sleeve having a central hole through which a round stem of the pistons is adapted to pass, and the inner sleeve :nlapted to rotate in the outer sleeve, and means, to rotate said sleeve, substantially as herein shown and described.

11. In a rotary engine; the combination with the revolving cylinder, having the collar and vane or abutment provided on the ported, hollow, stationary, shaft or cylinder and included therein, and the oscillating pistons, provided with the cranks and rollers mounted in the radial seats of the revolving cylinder, of the retaining sleeves provided with threaded shoulders, mounted in the extension of the radial piston seats, the outer sleeves secured to the revolving cylinder, the inner sleeves adapted to rotate in the outer sleeves, and having the stem of the pistons passing through the central hole, and adapted by the threaded shoulders to adjust the oscillating pistons endwise in the radial seats, and the flanged glands secured to the revolving cylinder between the sleeves, substantially as herein shown and described and for the purpose specified.

12. In a rotary engine; the combination with the revolving cylinder, having diametrically opposite oscillating pistons, held by retaining sleeves, and having hubs with a tapered bore, and mounted on a ported, hollow, stationary, shaft or cylinder, provided with a collar and vane or abutment said collar and vane or abutment thereof being included therein, the short inclines on said hollow shaft or cylinder, and the lugs on the inlet and exhaust heads, secured to said hollow, shaft or cylinder, of the tapered bearing sleeves, mounted slidably on said hollow, shaft or eyliinler. and projecting into the tapered bore of the hubs on which the revolving cylinder is adapted to rotate, the sleeves forced on the short inclines on said hollow, shaft or evlinder, by means, in conjunction with lugs on the tapered bearing sleeves, and lugs on the inlet and exhaust heads secured to said hollow, shaft or cylinder, whereby the tapered hearing sleeves are held adjustably endwise, substantially as herein shown and described and for the purpose specified.

13. In a rotary engine; the emnbination with the cam-ring secured on the bed-plate, of the revolving cylinder, mounted on hearing sleeves on a ported, hollow, stationary, shaft or cylinder provided with a collar and vane or abutment, said collar and vane or abutment thereof being included therein, the hollow, stationary, shaft or cylinder, with the inlet and exhaust heads secured thereto, supported on the upright stands. the revolving cylinder held concentric with the camring, and with the central vertical plane of intents said cylinder in a cent 'al plane between the vertical planes of the parallel straight portions of the camring, and oi the oscillating pistons, provided With the cranks and rollers and mounted in the diametrically opposite radial seats of the revolving cylinder, and held rotably therein by the retaining sleeves, secured to the revolving cylinder, the rollers adapted to project into the cam-path oil? the cam-ring and travel therein, and oscillate the pistons controlled by the cam-path of the cam-ring, the pistons being oscillated into the open and closed position as required when rotating with the revolving cylinder, substantially as herein shown and described and for the purpose specified.

let. The combination with a rotary engine out the kind in the Working chamber or working chambers oi? Which, a stationary abutment or the equivalent thereof coiiperates with rotating piston abutments, to form fluid tight compartments in the said Working chamber or Working chambers, and which piston abutmentsare adapted While rotating With the rotor element of the engine, to pass the said stationary abutment or the equivalent thereof, and to then be propelled therefrom toWard the exhaust opening or the said Working chamber or Working chambers by the pressure then exerted thereon by an actuating fluid, Which is admitted into the said Working chamber or working chambers through an inlet opening thereof, and whereby rotation of the rotor element of the engine is efl'ected; of means adapted to term a suitable fluid e2;- panding passage or nozzle, having a throat formed therein, from which throat the said expanding passage or nozzle is formed to have a gradually increasing cross-sectional area, and which expai'iding passage or nozzle preferably terminates at, and is held in fluid tight communication with, the inlet opening of the said Working chamber or Working chambers of the said engine; the said means adapted to be connected to means forming a passage through which an actuating fluid under pressln'e may llUW and. be conducted thereby into the said working chamber or Working chambers of the said engine; substantially as herein shown and described and as may be variously carried out in accordance herewith tor the purposes set forth.

ln testimony whereof l have signed my name to this specification in the presence or two subscribing witnesses.

Wllllllilill 0. l lliltllllliiflrlllllllllll'l.

Witnesses:

Many A. lurrzsninoias, James H. flirrr,

t'lepies otthta patent may be obtained tor five cents each, by addressing the tleinmtsstener o1 Patents Washington, It. U. 

